diff --git a/Thelia b/Thelia
index 31eed0c01..2aaa3c3e5 100755
--- a/Thelia
+++ b/Thelia
@@ -10,8 +10,8 @@ use Thelia\Core\Application;
 use Symfony\Component\Console\Input\ArgvInput;
 
 $input = new ArgvInput();
-$env = $input->getParameterOption(array('--env', '-e'), getenv('SYMFONY_ENV') ?: 'dev');
-$debug = getenv('SYMFONY_DEBUG') !== '0' && !$input->hasParameterOption(array('--no-debug', '')) && $env !== 'prod';
+$env = $input->getParameterOption(array('--env', '-e'), getenv('THELIA_ENV') ?: 'dev');
+$debug = getenv('THELIA_DEBUG') !== '0' && !$input->hasParameterOption(array('--no-debug', '')) && $env !== 'prod';
 
 $thelia = new Thelia($env, $debug);
 $application = new Application($thelia);
diff --git a/core/lib/Thelia/Command/ClearCacheCommand.php b/core/lib/Thelia/Command/ClearCacheCommand.php
index d6d058519..6ce20a32c 100644
--- a/core/lib/Thelia/Command/ClearCacheCommand.php
+++ b/core/lib/Thelia/Command/ClearCacheCommand.php
@@ -36,7 +36,7 @@ class ClearCacheCommand extends Command
     protected function configure()
     {
         $this
-            ->setName("clear:cache")
+            ->setName("cache:clear")
             ->setDescription("Invalidate all caches");
     }
 
@@ -49,7 +49,16 @@ class ClearCacheCommand extends Command
             throw new \RuntimeException(sprintf('Unable to write in the "%s" directory', $cacheDir));
         }
 
+        $output->writeln(sprintf("Clearing cache in <info>%s</info> directory", $cacheDir));
+
         $fs = new Filesystem();
-        $fs->remove($this->getApplication()->getKernel()->getContainer()->getParameter("kernel.cache_dir"));
+        try {
+            $fs->remove($cacheDir);
+
+            $output->writeln("<info>cache clear successfully</info>");
+        } catch(IOException $e) {
+            $output->writeln(sprintf("error during clearing cache : %s", $e->getMessage()));
+        }
+
     }
 }
\ No newline at end of file
diff --git a/core/lib/Thelia/Core/Application.php b/core/lib/Thelia/Core/Application.php
index be2cdb46a..1a47fa263 100644
--- a/core/lib/Thelia/Core/Application.php
+++ b/core/lib/Thelia/Core/Application.php
@@ -40,6 +40,9 @@ class Application extends BaseApplication
         $this->kernel = $kernel;
 
         parent::__construct("Thelia", Thelia::THELIA_VERSION);
+
+        $this->getDefinition()->addOption(new InputOption('--env', '-e', InputOption::VALUE_REQUIRED, 'The Environment name.', $kernel->getEnvironment()));
+        $this->getDefinition()->addOption(new InputOption('--no-debug', null, InputOption::VALUE_NONE, 'Switches off debug mode.'));
     }
 
     public function getKernel()